The Mercedes-Benz W114 and W115 were produced from 1968 to 1976 and were the first models after the merge of Daimler and Benz. The W114/W115 was originally designed as a compact executive car and was introduced as an entry-level model below the larger S-Class. As with all Mercedes-Benz lines, the W114/W115 models were streamlined and stylized while still remaining conservative enough to appeal to a wide range of buyers. In 1972, a new line of four-cylinder engines was introduced, allowing for better fuel economy without sacrificing power or performance. In 1975, a major facelift saw the introduction of a new front grille and headlights, as well as new interior trim and upholstery options. The W114/W115 remained in production until 1976 when it was replaced by the W123 series. Despite its short production run, the W114/W115 remains one of the most popular Mercedes-Benz models ever produced.